How many employees can run at least two of the three machines?

A survey of a machine shop reveals the following information about its 100 employees:48 can run a lathe49 can run the milling machine56 can operate a punch press26 can run a lathe and a milling machine19 can run a milling machine and a punch press24 can run a lathe and punch press9 can run all three machines

Asked by Ddeuitch, Last updated: Apr 11, 2024

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Ddeuitch

Answered May 02, 2018

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Section D can run both the lathe and the milling machine, but not the punch press Section H can run both the lathe and the punch press, but not the milling machine Section E can run both the punch press and the milling machine, but not the lathe Section L can run all three machines D + H + E + L = employees who can run at least two of the three machines